Tubular polypyrrole synthesized by in situ doping polymerization in the presence of organic function acids as dopants

Tubular polypyrrole (PPy) could be synthesized by in situ doping polymeriza tion in the presence of p-naphthalene sulfonic acid (NSA) as dopant. The re sultant tubular PPy-NSA not only exhibits high room temperature conductivit y (sigma(RT) = 10 S/cm) but is also soluble in m-cresol. The molecular stru cture of PPy-NSA is identical to the characteristic structure of PPy synthe sized by a conventional method. It has been demonstrated that NSA dopant wi th large molecular size and plate-lebe structure is a key factor to control formation of tubular PPy-NSA. (C) 1999 John Wiley & Sons, Inc.